53e0065e3e
配置 SSOT（TOML + .env） 统一错误契约 Auth 与事务边界 Redis / Celery 可靠性:业务 Redis（DB/0）与 Celery broker/backend（DB/1）显式拆分；连接池、sync client 可观测性（OpenTelemetry + LGTM）
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1.2 KiB
title, impact, impactDescription, tags, description, alwaysApply
| title | impact | impactDescription | tags | description | alwaysApply |
|---|---|---|---|---|---|
| Write Efficient Queries | HIGH | Proper filtering reduces query time by orders of magnitude | rqe, ft.search, query, performance, filters | Write Efficient Queries | true |
Write Efficient Queries
Be specific and use filters to reduce the result set early.
Correct: Use specific filters and limit results.
# Good: Specific query with filters
FT.SEARCH idx:products "@category:{electronics} @price:[100 500]"
LIMIT 0 20
RETURN 3 name price category
# Good: Use SORTBY and LIMIT
FT.SEARCH idx:products "@name:laptop"
SORTBY price ASC
LIMIT 0 10
Incorrect: Broad queries returning large result sets.
# Bad: Wildcard prefix scans entire index
FT.SEARCH idx:products "*" LIMIT 0 10000
# Bad: Loading all fields from source document
FT.AGGREGATE idx:products "*" LOAD *
Performance tips:
- Add
SORTABLEto fields used inSORTBY - Use
TAG SORTABLE UNFfor best performance on tag fields - Use
NOSTEMif you don't need stemming - Profile queries with
FT.PROFILE
FT.PROFILE idx:products SEARCH QUERY "@category:{electronics}"
Reference: Redis Search Query Syntax